Junction-box for electrical conductors.



APPLICATION FILED JAN.17, 1908.

. WITNESSES: INVENTOR: v' 05/ Mm? fi fifilw PATBNTED SEPT. s, 1908.

exrrnn srarng 'rnnr oFFICE.

JAMES F. BURNS, OF PHILADELPHIA, PENNSYLVANIA.

JUNCTION-BOX FOR ELECTRICAL CONDUCTOBS.

No. 898,182. Specification of Letters Patent. lPatented Sept. 8, 1908.

Application filed January 1'7, 1908. Serial No. 411,237.

To all whom it may concern: I

Be it known that I, JAMns F. Bonus, of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful improvement in Junction-l3oxes for Electrical Conductors, whereof the following is aspecil fication, reference being had to the accompanying drawings.

My improvement is particularly applicable to what are known as outlet boxes, and it is the object thereof to provide a box wherein both the number and the direction of the outlets may be variably determined.

My invention is advantageous in that a single form of box may be employed where several dillerent forms were heretofore required.

As hereinafter described, my invention comprises a box having walls extending in integral relation, in relatively transverse planes, with parallel edges opposed in separated relation, one of said edges being provided with semi-circularoutlet recesses, and the other of said edges being provided with a walls 4, and 5 of the box, which extend in relatively transverse planes, respectively respectively provided with the three semicircular outlet recesses 6, and with the single recess 7 the latter being'coextensive with said three recesses 6. V The removable angle plate 8 is coextensive with the space be tween the recessed edges of said walls 4 and 5, and is provided with the semi-circular outlet recesses 9, and the projection 10, respectively adapted to register with the outlet openings 6, shown in Fig. I. Said recesses S) are complementary to the end recesses 6 in said box and form therewith circular openings, whose axes extend at right angles with the axis of said inlets 2, and said projection 10 is adapted to cover recess 6 in said box. Said plate 8 is also provided at its opposite edge with the pro- -jection 11, which is adapted to cover and close the recess 7 in the wall 5, of said box. It is to be understood that other detachable plates may be provided to afford either one,

single recess coextensive wit-h said outlet rctwo or three outlets when attached to the cesses, so as to facilitate access to the interior box shown 1n F 1g. 1, and, the plate 8, shown of the box. A separate removable angle late is provided coextensive with the space lietweon said recessed wall edges, and adapted to close the same with the exception of the outlet recesses. Detachable means are provided for rcmovably securing said plate on said box, and the latter is so proportioned that its longitudinal side walls are in symmetrical relation with the. axis of the conduit with which the box is adapted to be coninrct-ed, so that said box may be turned upon said axis to selectively present said outlets in dill'orent directions .wilhout changing the location of said axis.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specilied.

In the drawings; Figure l is a perspective view of a box conveiiiently embodying my in'iprovement. Fig. ll, is a perspective view l of a removable plate. complexneniary to the box shown in Fig. l. Fig. lll, is a transverse sectional view of said box and plate asscmbled.

In said figures; the box 1 is provided with two cylindrical inlet openings 2, in its respectively opposite ends, hax ing a common axis coincident with that ol' the ronduit 2:3 with which the box is connected in ,nvenicntly by screw threads. The longitudinal side 1 inlet; walls extending parallel with the axis in Fig. II, or any aforesaid modification thereof may be rigidly secured in convection with the box by screws 14, which extend through the apertures 15, at the opposite ends of the plate in screw threaded engagement with the apertures 16, in the lugs 17, at the opposite ends of the box.

Referring to Fig. 111, it may be observed that the walls of the box are synunetrically related to the axis of the openings 2,-so that without disturbing the location of said axis, which is coincident with the conduit 3, said box may be turned to selectively present its outlets in di'li'erent directions. The outlet openings in the box are conveniently provided with bushings 19, of porcelain or other insulating material, which fit within the di- Vided openings, formed by the contiguous edges of the box and plate, and afford a continuous smooth margin for contact with the eomluctors.

I do not desire to limit myself to the precise details of construction and arrangement heroin set forth, as it is obvious that various modifications may be made therein without l departing from the essential features of my l invention, as defined in the appended claims.

I. claim: 1.. A JLlIlOtlUll box comprising a cylindrical parallel with the axis of said openings, are

and close the centrallation; a plate having recesses and of said inlet at right angles to each other, and

having recessed edges opposed in parallel re- IO]6C tions complementary to the recesses in said box walls; and means arranged to detachablfi secure said plate in said box, substantia y as set forth. I I

2. A junction box having its respectively opposite ends provided with screw threaded openings disposed on a common axis; and side walls extending at rightangles to each other, parallel with and in symmetrical relation to said axis, said walls being res ectively imperforate and provided with out ets, whereby said box may be turned upon said axis to selectively present said outlets in different directions, substantially as set forth. 31 A junction box comprising a cylindrical inlet and walls, respectively im erforate and provided with outlets, exten 'ng at right angles with each'other, arallel with and in Symmetrical relation to t e axis of said inlet, and arranged tobe turned upon said axis to selectively present said out ets in different directions, substantially as set forth.

4. A junction box comprising a cylindrical inlet; walls extending at right angles with each other parallel with the axis of said inlet, and having recessed edges; the edge of one wall having a plurality of-recesses and the edge of the other wall having a single recess coextensive with said plurality .of recesses in the other 'wall; a plate having recesses complementary to-the recesses in one of said walls and a projection com lementary to the recess in the other of sai walls; and means arranged to 'detachably secure said plate in said box, substantially as set forth.

5. A junction box having a screw-threaded opening for engagement with a conduit; an axis of rotation coincident therewith, and walls disposed transversely with res ect to said axis in rectangular relation, sai Walls being respectively imperforate and provided with an outlet; whereby, said box may be turned upon said axis to selectively present said outlet in different directions, substantially as set forth.

6. A junction box having a screw-threaded opening for engagement with a conduit; an

axis of rotation coincident therewith, and walls disposed transversely with respect to said axis in rectangular relation said walls being respectively removable and immovable, with respect to said opening; whereby said box may bev turned upon said axis to selectively present said removable wall in different directions, substantially as set forth.

7. A junction box provided at its end with a screw threaded opening fitted for connection with a conduit and comprising four walls extending parallel with said axis; two of said walls extending, at right angles to each other, in immovable relation with each other and with said opening; the other two of said walls extending at right angles and in immovable relation with each other, forming a lid rc movable with respect to the other walls and.-

means arranged to detachably secure said lid on said box, substantially as set forth.

8, A junction box comprising a cylindrical inlet and walls, respectively imperforate and provided with outlets, extending transversely to each other, parallel with, and in symmetrical relation to, the axis of said inlet, and arranged to be turned u on said axis to selectively present said out ets in different directions, substantially as set forth.

In testimony whereof, I have hereunto signed my name 'at Philadelphia, Pennsylvania, thissixteenthday of January.

JAMES .F. BURNS. Witnesses:

W. HAMILToN Rosa, CLARENCE W. SHrcK. 

